Analysis of Styrene Dimer and Trimer in Cup Noodle Containers

컵라면 용기중의 스티렌다이머와 트리머의 분석

  • Lee, Kwang-Ho (Packaging Division, Korea Food & Drug Administration) ;
  • Jang, Young-Mi (Packaging Division, Korea Food & Drug Administration) ;
  • Kwak, In-Shin (Packaging Division, Korea Food & Drug Administration) ;
  • Yoo, Seung-Seok (Packaging Division, Korea Food & Drug Administration) ;
  • Kim, Ki-Myeong (Packaging Division, Korea Food & Drug Administration) ;
  • Choi, Byung-Hee (Packaging Division, Korea Food & Drug Administration) ;
  • Lee, Chul-Won (Packaging Division, Korea Food & Drug Administration)
  • 이광호 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 장영미 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 곽인신 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 유승석 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 김기명 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 최병희 (식품의약품안전청 식품첨가물평가부 용기포장과) ;
  • 이철원 (식품의약품안전청 식품첨가물평가부 용기포장과)
  • Published : 1999.08.31

Abstract

Styrene dimers and trimers from polystyrene cup noodle containers were analyzed by GC and GC/MS extracted with various simulants. For the quantitation of styrene dimers and trimers, 1,3-diphenylpropane (DP) and benzyln-butyl phthalate (BBP) were chosen as the standards. The results showed that the average of the styrene dimers in the containers was 603 ppm, and that of trimers was 5731 ppm. Four styrene dimers, including 1,2-diphenyl-cyclobutane, were identified as well as seven trimers such as 2,4,6-triphenyl-l-hexene. The migration of the styrene dimers and trimers, from the cup noodle containers of polystyrene into foods, was conducted using simulants including boiling water as well as soybean oil and n-heptane. In addition to, the analysis of each migrated styrene was also performed filled with boiling water into noodle and soup after certain time (5, 10, 20, 30 min). The results showed that the migration of styrene dimers and trimers from cup noodle containers was not detected in the case of using boiled water or soybean oil as a simulant, while styrene dimers and trimers were detected 1.18 ppm and 14.21 ppm, respectively, when heptane was adopted as a simulant. In the case of filling with boiled water into noodle and soup, both styrenes were not detected at 5 min and 10 min, however, some samples standing for 20 min released styrene dimers and trimers as much as 0.009 ppm, and 0.019 ppm for 30 min.

Keywords

styrene dimer & trimer;polystyrene;cup noodle;simulant;migration